Photocatalytic Activity of TiO₂ Nanotube Modified by Cobalt

Abstract:

Cobalt modified TiO₂ nanotube was prepared by wet impregnation method from anodized nanotube. The microstructure and phase characteristic were studied by SEM, EDX and XRD analysis. The photocatalytic degradation of methylene blue under UV illumination was studied. Enhanced degradation efficiency could be obtained after sodium borohydride reducing. For the samples using low concentration of CoCl₂ in wet impregnation process, the degradation efficiency increased with the increase of CoCl₂ concentration and for high concentration, the degradation efficiency decreased. With increasing the post-treatment temperature, the degradation efficiency decreased.

• Periodical: Applied Mechanics and Materials (Volumes 110-116)
• Pages: 559-564
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.110-116.559
• Online since: October 2011
• Authors: Xin Sheng Yang, Hern Kim
• Keywords: Anodization, Photocatalytic Properties, Titanium Oxide Nanotube

References

[1] D. Šojić, V. Despotović, B. Abramović, N. Todorova, T. Giannakopoulou and C. Trapalis, Photocatalytic degradation of mecoprop and clopyralid in aqueous suspensions of nanostructured N-doped TiO2, Molecules, vol. 15, 2010, pp.2994-3009.

DOI: 10.3390/molecules15052994

[2] A. Fujishima, X. Zhang, D. A. Tryk, TiO2 photocatalysis and related surface phenomena, Surf. Scie Rep., vol. 63, 2008, p.515–582.

DOI: 10.1016/j.surfrep.2008.10.001

[3] A. Houasa, H. Lachheba, M. Ksibia, E. Elalouia, C. Guillardb and J-M. Herrmann, Photocatalytic degradation pathway of methylene blue in water, Appl. Catal. B: Environ., vol. 31, 2001, pp.145-157.

[4] J. M. Macak, H. Tsuchiya, A. Ghicov, K. Yasuda, R. Hahn, S. Bauer, P. Schmuki, TiO2 nanotubes: Self-organized electrochemical formation, properties and applications, Curr. Opin. Solid State Mater. Sci., vol. 11, 2007, pp.3-18.

DOI: 10.1016/j.cossms.2007.08.004

[5] G. L. Mor, O. K. Varghese, M. Paulose, K. Shankar, C. A. Grimes, A review on highly ordered, vertically oriented TiO2 nanotube arrays: Fabrication, material properties, and solar energy applications, Sol. Energy Mater. Sol. Cells, vol. 90, 2006, p.2011-(2075).

DOI: 10.1016/j.solmat.2006.04.007

[6] J. M. Macak, B. G. Gong, M. Hueppe, and P. Schmuki, Filling of TiO2 nanotubes by self-doping and electrodeposition, Adv. Mater. , vol. 19, 2007, p.3027–3031.

DOI: 10.1002/adma.200602549

[7] Y.F. Tu et al. Preparation of Fe-doped TiO2 nanotube arrays and their photocatalytic activities under visible light, Mater. Res. Bull. vol. 45, 2010, p.224–229.

DOI: 10.1016/j.materresbull.2009.08.020

[8] Y. Zhang, Y. Yang, P. Xiao, X. Zhang, L. Lu, L. Li, Preparation of Ni nanoparticle-TiO2 nanotube composite by pulse electrodeposition, Mater. Lett., vol. 63, 2009, pp.2429-2431.

DOI: 10.1016/j.matlet.2009.08.019

[9] H. Zhao, Y. Chen, X. Quan, X. Ruan, Preparation of Zn-doped TiO2 nanotubes electrode and its application in pentachlorophenol photoelectrocatalytic degradation, Chin. Sci. Bull., vol. 52, 2007, pp.1456-1461.

DOI: 10.1007/s11434-007-0170-8

[10] A. Benoit, I. Paramasivam, Y. -C. Nah, P. Roy, P. Schmuki, Decoration of TiO2 nanotube layers with WO3 nanocrystals for high-electrochromic activity, Electrochem. Commun., vol. 11, 2009, pp.728-732.

DOI: 10.1016/j.elecom.2009.01.024

[11] J. M. Wu, T. W. Zhang, Y.W. Zeng, S. Hayakawa, K. Tsuru and A. Osaka, Large-scale preparation of ordered titanianNanorods with enhanced photocatalytic activity, Langmuir, vol . 21, 2005, pp.6995-7002.

DOI: 10.1021/la0500272